Sondors Fold XS

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messenjah71

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Does anyone know what controller the Sondors Fold XS uses?

I think that after 4000 miles, my controller is showing signs of failure.

Power to both pedal assist and throttle will stop, then after a while will start up again. This is happening with some frequency now.

Thanks for your help!
 
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Hello, I’m having an issue with my fold xs at the moment, basically it won’t switch on after only 500 miles. It was working fine then i switched it on one morning and everything came on as usual (LCD screen etc) and then instantly everything cut out and won’t switch on again. After 5 weeks of awful customer service from Sondors they finally sent me a controller as they think that’s the issue. However they sent a different one to what I need and I’ve been trying to contact them since Monday this week and they won’t answer my emails etc to get a replacement or discuss my options. Ive attached an image to the post so you can see the two controllers I’ve got.

My controller is the one on the left and the one they sent me is on the right. My controller has 2 extra wires on the left side of the wire group. Im not sure what the extra orange and red plugs on the left side do and why they’re not on the controller they sent me. I’m thinking it’s the lights and indicators but not sure.

I’m not even 100% sure it’s the controller with the issue and always thought it could be the LCD screen and the + i - switch. But im sure Sondors know best.

Do you know yourself or does anymore reading this post know? Any help would be much appreciated.

Hope this helps you.
 

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I love my fold, but it has some design deficiency's that effect reliability. The biggest problem is having the controller locked up inside the frame with no ventilation. This makes the controller get very hot when using lot of power, and causes failures.

Be aware that Sondors controllers, and display's are protocol protected, which means neither part will work with aftermarket controllers, or display's. The work around for this problem is to replace both parts at the same time.

These aftermarket parts will replace the stock controller, and display.
electrobikeworld.com

25amp 36 - 52v KT Controller with HIGO connectors

This 25amp controller will boost your bike to the next level of performance and you'll gain more power, acceleration and torque for climbing hills.
electrobikeworld.com
electrobikeworld.com

KT-LCD8H USB Color Display Sondors

Our new KT-LCD8H color display has a built in USB port to charge your phone on the go or run headlights for night riding. This unit will only work with our 20, 25 & 35a controllers. Comes with a 5pin green HIGO connector. Package includes: - LCD wit
electrobikeworld.com

While you're at it, it would be a good idea to move the controller to outside of the frame, but it requires a lot of extra work.
b.jpg

GPS Alarm.jpg
 
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biknut said:
I love my fold, but it has some design deficiency's that effect reliability. The biggest problem is having the controller locked up inside the frame with no ventilation. This makes the controller get very hot when using lot of power, and causes failures.

Be aware that Sondors controllers, and display's are protocol protected, which means neither part will work with aftermarket controllers, or display's. The work around for this problem is to replace both parts at the same time.

These aftermarket parts will replace the stock controller, and display.
electrobikeworld.com

25amp 36 - 52v KT Controller with HIGO connectors

This 25amp controller will boost your bike to the next level of performance and you'll gain more power, acceleration and torque for climbing hills.
electrobikeworld.com
electrobikeworld.com

KT-LCD8H USB Color Display Sondors

Our new KT-LCD8H color display has a built in USB port to charge your phone on the go or run headlights for night riding. This unit will only work with our 20, 25 & 35a controllers. Comes with a 5pin green HIGO connector. Package includes: - LCD wit
electrobikeworld.com

While you're at it, it would be a good idea to move the controller to outside of the frame, but it requires a lot of extra work.View attachment 9725
View attachment 9726
Click to expand...
Thank you for the information. I been looking on that site but didn’t realise you needed to change both parts.

I will definitely look at that this as an option.

Can I ask in your opinion what you think is the problem is with my bike? It’s only done 500 miles, 7 months old and with it not switching on now Is it most likely the Controller rather than just the LCD screen and assistance switch?

Thanks for your help
 
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messenjah71 said:
Does anyone know what controller the Sondors Fold XS uses?

I think that after 4000 miles, my controller is showing signs of failure.

Power to both pedal assist and throttle will stop, then after a while will start up again. This is happening with some frequency now.

Thanks for your help!
Click to expand...
I have a Fold XS I bought May 2022, only 400 miles on it. Did you have any resolution? I’d be willing to let it go for $1000. Getting too heavy for me to transport. It has the fender/rack setup also.
 
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My 2017 Sondors Fold X Display is no longer working. It has a brand new battery and the display got wet, after putting it in rice it will not turn on and E bike has no power to accelerator. Is there a Display that is available to replace this with one that does not require the controller replacement as well?

Update: Was the display that got fried from the rain. Replaced with - https://www.amazon.com/dp/B09VB66FFG?ref=ppx_yo2ov_dt_b_product_details&th=1

Bike working normally.
 
Links to Amazon may include affiliate code. If you click on an Amazon link and make a purchase, this forum may earn a small commission.
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messenjah71 said:
Does anyone know what controller the Sondors Fold XS uses?

I think that after 4000 miles, my controller is showing signs of failure.

Power to both pedal assist and throttle will stop, then after a while will start up again. This is happening with some frequency now.

Thanks for your help!
Click to expand...
I'm having g the same issue at one point it cut off knowing my battery was fully charged just stunned me halve way to work riding it, that was two years ago, but now under 22 miles per hour it stops just like when you hold the throttle and press the break the throttle just stops but in that case I never pressed the break, so I don't know what's going on, now my charger to my bike which I have th Fold XS model my charger doesn't work anymore so now I tried to buy one from the Sondors web sit but all I get is some error page almost as if they were all out of accessories. I tried to email, phone call I've tried everything I still can't get in contact with them OH, this is the big one I purchased from. There site of course set up an email and everything about 4,5 years ago now it's like my info doesn't even exist anymore they saying that the email doesn't exist in there file lol, if you know where to get a charger from let me know please Thanx
 
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